rgb2col: Find Named Color Closest to Given Hex RGB Colors This...

In friendly/myutil: My utility functions

Find Named Color Closest to Given Hex RGB Colors This function calculates the distance (in CIE Lab color space) between the input colors (in RGB hex notation) and all named colors() It returns the closest named color within a given threshold distance.

Description

Find Named Color Closest to Given Hex RGB Colors This function calculates the distance (in CIE Lab color space) between the input colors (in RGB hex notation) and all named colors() It returns the closest named color within a given threshold distance.

Usage

rgb2col(cols, near = 2.3)

Arguments

cols	A vector of colors, in RGB hex notation, e.g., "\#00AE30"
near	Threshold for nearest color from colors(). The default corresponds to 1 JND in Lab space.

Value

A vector of color names, or the hex value if no color is close enough

Source

From J. Fox, R-help, 5-30-2013

Examples

cols <- c("#010101", "#EEEEEE", "#AA0000", "#00AA00", "#0000AA", "#AAAA00", "#AA00AA", "#00AAAA")
(nms <- rgb2col(cols))
pie(rep(1, 2*length(cols)), labels=c(rbind(cols, nms)), col=c(rbind(cols, nms)))

friendly/myutil documentation built on Nov. 1, 2024, 1:01 p.m.